What are the effects of changing tires from 45 to 55?

[Jimmy]

Generally speaking, it is not recommended to change a car tire's aspect ratio from 45 to 55, as the original aspect ratio of the car tires is determined through a series of factory tests to achieve the optimal performance. The optimal aspect ratio ensures the normal operation of various functions of the vehicle. Tires with a higher aspect ratio have relatively longer sidewalls, which enhances their ability to absorb and cushion vibrations, providing better comfort. However, they offer poorer road feedback and weaker lateral resistance during turns. Below are the related impacts: 1. Malfunction of the car's ABS: The ABS system operates by monitoring the relative speed of the wheels. If the total diameter of the tire and rim combination changes too much, it can affect the effectiveness of the ABS. 2. Inaccurate odometer readings: The odometer calculates distance based on the tire's circumference. Changing the aspect ratio alters the circumference, leading to inaccurate odometer readings. 3. Transmission issues: The optimal aspect ratio helps maintain the transmission's normal function. Altering the aspect ratio can cause transmission malfunctions.